Сам документ (1.5МБ):
Microsoft® Online Services
Global Criminal Compliance Handbook

Его гриф:
Microsoft Confidential For Law Enforcement Use Only

С последней страницы:
Information that may be disclosed with a subpoena. Basic subscriber information includes name, address, length of service (start date), screen names, other email accounts, IP address/IP logs/Usage logs, billing information, content (other than e-mail, such as in Windows Live Spaces and MSN Groups) and e-mail content more than 180 days old as long as the governmental entity follows the customer notification provisions in ECPA (see 18 U.S.C. §§ 2703(b), 2705.)

ps. На самом сайте http://cryptome.org/ много других документов.

upd. ссылки по теме
1. Microsoft погорячился? от nic.ru
2. ТОРРЕНТС.РУ по американски... у bablaw 
3. наезд на cryptome на lj.russia.org

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180 дней на конфиденциальность почты, хм.